CN218788345U - Rotary arc-extinguishing device - Google Patents
Rotary arc-extinguishing device Download PDFInfo
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- CN218788345U CN218788345U CN202222979441.3U CN202222979441U CN218788345U CN 218788345 U CN218788345 U CN 218788345U CN 202222979441 U CN202222979441 U CN 202222979441U CN 218788345 U CN218788345 U CN 218788345U
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- arc
- extinguishing chamber
- arc extinguishing
- contact
- extinguishing
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Abstract
The utility model provides a rotatory arc control device relates to the arc control device field, include: the arc extinguishing chamber is arranged inside the arc extinguishing chamber, a static contact is arranged on the upper side inside the arc extinguishing chamber, a moving contact is arranged at the lower end of the static contact and penetrates through a lower end shell of the arc extinguishing chamber in a sliding mode, a current leading end is arranged on the outer side of the moving contact, a cylindrical electrode is welded at the outer end of the current leading end, and an arc suppression coil is welded at the outer end of the cylindrical electrode. The utility model discloses a charged particle outwards rotates diffusion in the electric arc with higher speed to cool off the electric arc fast and make it extinguish.
Description
Technical Field
The utility model relates to an arc control device technical field, concretely relates to rotatory arc control device.
Background
As is well known, the basic structure of an arc extinguishing chamber of an SF6 circuit breaker is divided into a double-pressure type arc extinguishing chamber and a single-pressure type arc extinguishing chamber according to the air compression mode of an arc extinguishing medium; according to the mode of arc blowing, the arc extinguishing chamber can be divided into a double-blowing type arc extinguishing chamber, a single-blowing type arc extinguishing chamber, an external-blowing type arc extinguishing chamber and an internal-blowing type arc extinguishing chamber; the arc extinguishing chamber can be divided into an arc extinguishing chamber with variable opening distance and fixed opening distance according to the movement mode of the contact; according to the development stages of the arc extinguish chamber, the arc extinguish chamber can be divided into a first generation double-voltage arc extinguish chamber, a second generation single-voltage variable-opening-distance arc extinguish chamber, a fixed-opening-distance arc extinguish chamber and a third generation single-voltage variable-opening-distance self-energy arc extinguish chamber. Through retrieval, the prior art (application number: CN 202020953623.1) describes that the magnetic blowing rotary arc type arc extinguishing chamber with the high-strength arc extinguishing function comprises an arc extinguishing chamber outer sleeve, an arc extinguishing chamber outer cover, an arc extinguishing chamber inner cover assembly, an arc extinguishing chamber inner ring, a copper strip and a magnetic blowing coil arranged near a fixed contact, wherein the arc extinguishing chamber outer sleeve, the arc extinguishing chamber outer cover, the arc extinguishing chamber inner cover assembly, the arc extinguishing chamber inner ring and the copper strip are formed by a hot casting process, the arc extinguishing chamber outer sleeve is formed by assembling two flat round tables, one end of the arc extinguishing chamber outer sleeve is connected with the arc extinguishing chamber outer cover, and an installation opening is formed in the arc extinguishing chamber outer sleeve. The utility model discloses, the utility model discloses use the laboratory data of mill as the foundation, confirm the breach in the test scheme from the difference, under the prerequisite that does not add equipment, personnel and special technology, only through changing part structure size and material, reached the product that production accords with national grid technical requirement promptly, do not increase the cost of manufacture, played the whole quality and the security that improve the switch and show the promotion effect.
However, the magnetic blowing rotary arc type arc extinguishing chamber in the prior art only has a shell structure of the arc extinguishing chamber, and an arc extinguishing coil and an electrode for arc extinguishing have no specific installation structure and are located at the installation position of the arc extinguishing chamber, so that the installation positions of the arc extinguishing chamber and a moving contact and a static contact are not clear, the arc extinguishing principle is not clear, and a specific device structure cannot be realized in practical application.
SUMMERY OF THE UTILITY MODEL
For overcoming the defect that prior art exists, provide a rotatory arc control device now to solve the magnetic blow among the prior art and revolve the shell structure that the arc formula explosion chamber only has simple explosion chamber, lack specific arc extinguishing structure, lead to unable concrete device structure of realization in practical application, the unable problem of putting into production.
To achieve the above object, there is provided a rotary arc extinguishing device including: the arc extinguishing chamber is arranged inside the arc extinguishing chamber, a static contact is arranged on the upper side inside the arc extinguishing chamber, a moving contact is arranged at the lower end of the static contact and penetrates through a lower end shell of the arc extinguishing chamber in a sliding mode, a current leading end is arranged on the outer side of the moving contact, a cylindrical electrode is welded at the outer end of the current leading end, and an arc suppression coil is welded at the outer end of the cylindrical electrode.
Furthermore, the moving contact is arranged to be of a rod structure, and the moving contact, the fixed contact and the inner wall of the arc extinguish chamber are all made of copper-tungsten alloy.
Furthermore, a slotted hole is formed in the upper end of the arc extinguishing cover, the inner diameter of the slotted hole is larger than the width of the static contact, and the static contact is not in contact with the inner wall of the arc extinguishing chamber.
Furthermore, the lower end of the static contact is provided with an N-shaped groove block, a semicircular lug is welded on the inner side of the groove block, and the notch of the groove block corresponds to the position of the moving contact on the lower side.
Furthermore, the arc suppression coil is wound on the outer wall of the cylindrical electrode, the cylindrical electrode is fixed on the bottom shell of the arc suppression cover, and a round hole is formed in the middle of the bottom shell.
Further, the arc extinguishing chamber shell is of a conical structure with a wide upper part and a narrow lower part, and the arc extinguishing chamber is of a cylindrical structure.
The beneficial effects of the utility model reside in that, at the inside arc suppression coil and the drum electrode that set up of arc chute, and static contact and moving contact, its mounted position relation is clear and definite, be convenient for drop into in actual production and the application, its arc extinguishing principle, when moving contact and static contact separately promptly the separating brake operation in electric arc can shift to the arc extinguish chamber at once, the electric current flows through arc suppression coil, establish magnetic field in the arc extinguish chamber, magnetic field perpendicular to electric arc, make electric arc rotate fast in the arc extinguish chamber, lengthen electric arc, charge particle outwards rotatory diffusion in the electric arc with higher speed, thereby cool off electric arc fast and make it extinguish.
Drawings
Fig. 1 is a schematic view of a fire extinguishing cover according to an embodiment of the present invention.
Fig. 2 is an internal schematic view of the extinguishing cover according to the embodiment of the present invention.
Fig. 3 is a schematic view of arc motion according to an embodiment of the present invention.
In the figure: 1. an arc chute; 2. an arc extinguishing chamber; 3. carrying out static contact; 4. a moving contact; 5. an arc suppression coil; 6. a cylindrical electrode; 7. and a drainage end.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
Referring to fig. 1 to 3, the present invention provides a rotary arc extinguishing device, including: the arc extinguishing chamber comprises an arc extinguishing cover 1, an arc extinguishing chamber 2, a static contact 3, a moving contact 4, an arc extinguishing coil 5, a cylindrical electrode 6 and a drainage end 7.
Specifically, the inside of arc extinguishing chamber 1 is provided with explosion chamber 2, and the inside upside of explosion chamber 2 is provided with static contact 3, the lower extreme of static contact 3 is provided with moving contact 4, and moving contact 4 slides and runs through the lower extreme casing of arc extinguishing chamber 1, the outside of moving contact 4 is provided with drainage end 7, and the outer end welding of drainage end 7 has drum electrode 6 to the outer end welding of drum electrode 6 has arc suppression coil 5.
As a preferred embodiment, the arc-extinguishing chamber 1 has a clear internal structure layout, and utilizes the electromagnetic force generated by the current flowing through the main circuit of the switch to accelerate the outward rotation and diffusion of the charged particles in the arc, so as to rapidly cool and extinguish the arc, thereby accelerating the arc-extinguishing efficiency.
Wherein, the current-guiding end 7 protrudes towards the inner side, so that the coil can be conveniently connected into the electric arc, and further the electromagnetic force of the magnetic field is generated.
The following advantages are provided in this embodiment: the operation power is small (not more than 30J), and the operation power of similar products is generally more than 100J. Therefore, the operation is stable, the service life is long, and the mechanical life reaches more than 20,000 times.
The breaking capacity is strong, and the electrical service life is durable. The switch can be opened 1,000 times under 100% load current (630A), the maximum can be opened by 4kA current, and the rated current can be opened under zero gauge pressure.
No overvoltage is generated, and the switch is suitable for being used as a capacitor switching switch; the insulating property is excellent, and the rated insulating level of the product can be ensured even under zero gauge pressure
The moving contact 4 sets up to body of rod structure, and moving contact 4, static contact 3 and 2 inner walls of explosion chamber all set up to copper tungsten alloy material.
As a preferred embodiment, the copper-tungsten alloy material increases the burning resistance of the contact and the arc extinguishing chamber 2.
A slotted hole is formed in the upper end of the arc extinguishing cover 1, the inner diameter of the slotted hole is larger than the width of the static contact 3, and the static contact 3 is not in contact with the inner wall of the arc extinguishing chamber 2; the outer shell of the arc extinguishing chamber 1 is of a conical structure with a wide upper part and a narrow lower part, and the arc extinguishing chamber 2 is of a cylindrical structure.
As a preferred embodiment, the slot hole at the upper end of the arc-extinguishing cover 1 facilitates the fixed installation of the static contact 3.
The lower extreme of static contact 3 is provided with N shape groove block, and the inboard welding of groove block has semi-circular lug to the notch of groove block corresponds with the moving contact 4 position of downside.
As a preferred embodiment, the stable insertion of the moving contact 4 and the stationary contact 3 is facilitated by the N-shaped slot block.
The arc suppression coil 5 is wound on the outer wall of the cylindrical electrode 6, the cylindrical electrode 6 is fixed on the bottom shell of the arc suppression cover 1, and a circular hole is formed in the middle of the bottom shell.
As a preferred embodiment, the circular hole facilitates the sliding of the movable contact 4.
The utility model discloses a rotatory arc control device can effectively solve the magnetic blow among the prior art and revolve the shell structure that arc formula explosion chamber only is simple explosion chamber, lacks specific arc extinguishing structure, leads to unable specific device structure of realization in practical application, and the unable problem of putting into production, at inside arc suppression coil and the drum electrode that sets up of arc extinguishing cover and static contact and moving contact, its mounted position relation is clear and definite, is convenient for put into practical production and use.
Claims (6)
1. A rotary arc extinguishing device comprising: arc extinguishing chamber (1), its characterized in that: the arc extinguishing chamber (2) is arranged in the arc extinguishing chamber (1), the fixed contact (3) is arranged on the upper side of the arc extinguishing chamber (2), the movable contact (4) is arranged at the lower end of the fixed contact (3), the movable contact (4) penetrates through the lower end shell of the arc extinguishing chamber (1) in a sliding mode, the drainage end (7) is arranged on the outer side of the movable contact (4), the cylindrical electrode (6) is welded to the outer end of the drainage end (7), and the arc extinguishing coil (5) is welded to the outer end of the cylindrical electrode (6).
2. The rotary arc-extinguishing device according to claim 1, characterized in that the moving contact (4) is configured as a rod structure, and the moving contact (4), the fixed contact (3) and the inner wall of the arc-extinguishing chamber (2) are all configured as copper-tungsten alloy.
3. A rotary arc-extinguishing device according to claim 1, characterized in that the upper end of the arc-extinguishing cover (1) is provided with a slotted hole, the inner diameter of the slotted hole is larger than the width of the static contact (3), and the static contact (3) is not contacted with the inner wall of the arc-extinguishing chamber (2).
4. A rotary arc-extinguishing device according to claim 1, characterized in that the lower end of the static contact (3) is provided with an N-shaped groove block, a semicircular lug is welded on the inner side of the groove block, and the notch of the groove block corresponds to the position of the moving contact (4) on the lower side.
5. A rotary arc-extinguishing device according to claim 1, characterized in that the arc-extinguishing coil (5) is wound around the outer wall of the cylindrical electrode (6), and the cylindrical electrode (6) is fixed to the bottom casing of the arc-extinguishing chamber (1), and the bottom casing is provided with a circular hole in the middle.
6. A rotary arc extinction device according to claim 1, characterized in that the arc chute (1) housing is arranged in a conical configuration with a wide top and a narrow bottom, and the arc chute (2) is arranged in a cylindrical configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222979441.3U CN218788345U (en) | 2022-11-09 | 2022-11-09 | Rotary arc-extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222979441.3U CN218788345U (en) | 2022-11-09 | 2022-11-09 | Rotary arc-extinguishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218788345U true CN218788345U (en) | 2023-04-04 |
Family
ID=86504403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222979441.3U Active CN218788345U (en) | 2022-11-09 | 2022-11-09 | Rotary arc-extinguishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218788345U (en) |
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2022
- 2022-11-09 CN CN202222979441.3U patent/CN218788345U/en active Active
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